4
Introduction
All new Current Mode switching design offers increased power and reliability in a compact
package. Extra input and output filtering reduce EMI to extremely low levels. Reliability
features include an input fuse, thermal shutdown, current limiting, reverse battery hookup
protection and output short circuit shutdown with automatic recovery. The output voltage is
easily adjusted 1.0 volts above or below the standard output voltage. An output overvoltage
crowbar circuit protects devices connected to the converter. The VTC1000 Series Voltage
Converter supplies either 12, 24, 32 or 48 VDC from a 110, 250 or 300 VDC power source.
Other input voltages up to 300 volts or output voltages up to 48 volts are also available by
special order. High quality digital meters can be added (factory option) to allow monitoring of
output current and output voltage.
Specifications
Input Voltages
Nominal (ip)
110
250
300
Actual (Vdc)
100 - 140
230 - 280
280 - 360
Input Amps (max)
14.5
6.3
5.2
Input Fuse (slow blow)
MDA-20
MDA-10
MDA-6
Output Voltages
Nominal (op)
12
24
32
48
Actual
13.6 ± 0.05V
27.2 ± 0.05V
36.3 ± 0.05V
54.4 ± 0.05V
Output Adjustment
± 1.0 Volts
Output Crowbar
16.0 ± 0.5 V
32 ± 1.0 V
43.7 ± 1.3 V
63.9 ± 2.0 V
Output Amps (cont)
60
40
30
20
Output Amps (max)
70
45
34
22.5
